Colon Flashcards Preview

Anatomy Module 5 > Colon > Flashcards

Flashcards in Colon Deck (66):
0

Located from the distal end of the ileum to the anus

Colon

1

Wall is puckered into sacculations

Colon

2

Function is absorption of fluid and solutes

Colon

3

Prevents reflux of chyme
Slows passage of ileal contents by sympathetic stimulation

Valves - located at ileocecal orifice

4

In the R iliac fossa, colon becomes what?

Cecum

5

Rests on iliacus and psoas major
Covered by peritoneum
Appendix arises
Large blind pouch

Cecum

6

Frequently contains the vermiform appendix

Retro-cecal recess

7

Commences fluid and electrolyte reabsorption

Colon

8

Blood supply of the colon

Ileo-colic artery

9

Superior branch of the ileo colic artery anastomoses with

R colic a

10

What branch of the ileo colic artery anastomoses with r colic a

Superior branch

11

Inferior branch of the ileo colic artery anastomoses with

SMA

12

What are the branches of the Inferior branch of ileo colic artery

Ascending (colic) a
Ante cecal a
Poste cecal a
Ileal a
Appendicular a

13

Ileo colic vein drains to

SMV

14

What drains into the superior branch of the ileo colic vein

Ascending colic vein

15

What drains into the inferior branch of the ileo colic vein

Anterior and posterior cecal c
Ileal v
Appendicular v

16

Nodes in the ileo colic chain drains to

SM Nodes

17

Where ascending colon bends to the left and is the junction of ascending and transverse colon

R colic or hepatic flexure

18

Where bloodless surgery can be done

Paracolic gutter

19

Supplies the distal half of the ascending colon

R colic artery

20

Branch of the R colic a that anastomose with ileo colic a

Descending

21

Middle colic artery anastomose with what branch of the r colic a

Ascending

22

R colic vein drains to

SMV then Portal v

23

IMV drains to

Splenic v

24

Gasto colic trunk is composed of what vessels

SMV
R gastro epiploic v
Inferior pancreatico duodenal v

25

Lymph drainage of the ascending colon

Superior Mesenteric plexus

26

Colon: an inverted arch - 50 cm long

Transverse colon

27

The transverse colon curves below the spleen as the __________. This is also the junction of the transverse and descending colon.

L colic or splenic flexure

28

Transverse colon is attached to the diaphragm by

Phrenico colic ligament

29

Transverse colon is attached to the greater curvature by

Gastro colic ligament

30

Condition that is mistaken for free intraperitoneal gas

Chilaiditi syndrome

31

Supplies the proximal 2/3 of transverse colon

SMA via Middle colic a

32

Branch of the middle colic artery that anastomose with r colc a

R branch

33

The L branch of the middle colic a anastomose with

L colic a

34

Supplies the distal third of transverse colon

Asc branch of L colic a

35

Branches of the middle colic a drains to

Branches of middle colic v

36

Middle colic v drains to

Direct: portal
Indirect: SMV

37

Proximal 2/3 of the transverse colon is innervated by

SM Plexus

38

SYMPAthetic supply of the distal third of the transverse colon and descending colon is via

IM Plexus ONLY

39

PARASYMPAthetic supply of the distal third of the transverse colon and the descending colon is via

IM Plexus AND 2nd-4th sacral segments

40

Descends in the angle between psoas major and quadratus lomborum to the iliac crest - 25 cm long

Deacending colon

41

Arterial supply of the descending colon

IMA via L colic branch

42

Left branch of the L colic a anastomose with

Highest sigmoid artery

43

L colic vein drains to

IMV

44

Lymph drainage of descending colon

IM nodes

45

Descending colon curves infero-medially to form a mobile loop and become

Sigmoid colon

46

Where taenia coli terminates

Sigmoid colon

47

Recto sigmoid junction

Termination of taenia coli indicates

48

Sigmoid colon is mobile except where?

Middle part: vulvulus of sigmoid colon

49

Disappear as longitudinal muscle of the colon broadens to form a complete layer in the rectum

Taenia coli

50

Sigmoid colon ends where

L midline at level of S3

51

Branch of IMA that supplies lower descending and sigmoid colon

Sigmoid arteries, usually 3-5

52

Sigmoid arteries anastomose superiorly with _________ to form marginal arteries

Desc branch of L colic a

53

Sigmoidal arteries anastomose inferiorly with

Superior rectal a

54

True or False. Sigmoid arteries anastomose with each other

True. They form marginal arteries

55

Drains sigmoid colon

Sigmoid veins to IMV to splenic to portal

56

Lymphatic drainage of sigmoid colon

Sigmoid nodes in sigmoid mesocolon to intermediate colic LN to IM LN

57

Sigmoid nodes drain to

IM nodes
- but may also drain to SM nodes

58

Orad to L colic flexure, para and sypma fibers travel TOGETHER from

Abdominal Aortic Plexus

59

ABORAD, sympa supply comes from

IM plexus

60

ABORAD, parasympa fibers comes from

Both IM Plexus and via 2nd-4th sacral segments

61

Distinct longitudinal branch of tenia coli

Mesocolic tenia
Omental tenia
Free tenia

62

Sacculations of the wall of the colon between tenia

Haustra

63

Thickened bands of smooth muscle representing most of the longitudinal coat of the colon

Tenia coli

64

Where tenia coli merge with each other to form a continuous layer around rectum

Rectosigmoid junction

65

Cecum is bound to the abdominal wall by

Cecal folds